Improved clamp for straps



UNITED STATES JOHN J. e. FISHER, oF FoxBoEoUeH, MASSACHUSETTS.

IMPROVED CLAMP FOR STRAPS.

Specification forming part of Letters Patent No. 49,252, dated August 8,1865.

To all whom it may concern:

Be it known that I, JOHN J. G. FISHER, of Foxborou gh, in the county ofNorfolk and State of Massachusetts, have invented an Improved Glamp orHolder for Straps, of which the following is a full, clear, and exactdescription, reference being had to the accom panyin g drawings, makingpart of this specication, in which- Figure l is a view of my improvedclamp with a strap attached thereto. Fig. 2 is a longitudinal section through the centerof the same.

My invention consists in a strap-fastener iu which the strapis securedat any required point by means ofa holding-plate working in a box orframe and operated by a screw or equivalent mechanical device forgivingthe required pressure, whereby the strap is held firmly without anyliability of' slipping, whether there bel mpre or less strain upon it,and, the ordinary tongue-buckle being dispensed with, no holes arerequired to be made in the strap.

v Io enable others skilled in the art to underv stand and use myinvention, I will proceed to describe the manner in which I have carriedit out.

In the said drawings, A is the base of-the clamp, at one end ot which isformed a box or frame, B, the sides of which are left open to allow ofthe passage of the strap C, one end ot' which is permanently secured ata to the opposite end of the clamp A.

D is a holding-plate, which ts snugly within the box B, and is forceddown upon the strap G by means of a thumb-screw, b, which works in thetop ot' the box B, and is secured at its lower end to the plate D, thetwo surfaces between which the strap is conned being slightly roughenedor corrugated, so. as to prevent it from slipping.

c c arestandards rising from the base of the clanlpA, between whichishung the roll d, under which the strap C is passed, and which serves asa purchase over which to draw the strap tight, which can then beinstantly secured in place by turning the screw b, without giving backor losing part of what has been gained rby drawing it up, as is the casewhen inserting the tongue ot an ordinary buckle, while (the roll elbeing of greater diameter than the ordinary roll of a buckle) more powercan be applied, and the strap consequently drawn tighter.

It will thus be seen that the strap is held tirmly between the base ofthe clamp and the plate D without marrin g or otherwise injuring it,while the strap is not weakened by holes,

as when the ordinary tongue-buckle is used.V

When it is desired to release the end of the strap G it is simplynecessary to raise the plate D by turning the screw b, when the stra isfree to be drawn out as required.

Itis obvious that some other mechanical device than the screw b maybeemployed to force down the holding-plateD upon the strap withoutdeparting from the spirit of my invention.

The above-described fastener will he found particularly useful instrapping baggage and heavy loads onto wagons, and' may be employed togreat advantage to replace the ordinary 'tonguebuckle What I claim as myinvention, and desire to secureby Letters Patent, is- 'y Iheholding-plate D, operated by the screw b,`or equivalentmechanicaldevice, in combination with the box or frame B, operatingsubstantially as set forth.

E. P. CARPENTER, BAINBRIDGE Mower.`

